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EN 1.4658 Stainless Steel vs. AISI 439 Stainless Steel

Both EN 1.4658 stainless steel and AISI 439 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4658 stainless steel and the bottom bar is AISI 439 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
160
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 28
23
Fatigue Strength, MPa 530
170
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 580
310
Tensile Strength: Ultimate (UTS), MPa 900
490
Tensile Strength: Yield (Proof), MPa 730
250

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 460
530
Maximum Temperature: Mechanical, °C 1100
890
Melting Completion (Liquidus), °C 1450
1510
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 25
9.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.5
2.3
Embodied Energy, MJ/kg 61
34
Embodied Water, L/kg 200
120

Common Calculations

PREN (Pitting Resistance) 49
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
95
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
160
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
18
Strength to Weight: Bending, points 26
18
Thermal Diffusivity, mm2/s 4.3
6.7
Thermal Shock Resistance, points 24
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 26 to 29
17 to 19
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 50.9 to 63.7
77.1 to 82.8
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 5.5 to 9.5
0 to 0.5
Nitrogen (N), % 0.3 to 0.5
0 to 0.030
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.1